Hi, I want to make dynamic patterns on a 8x24 LED matrix, with fading effects on each individual LED. I know I can use TLC5940 to expand the PWM outputs of my arduino nano. But can I connect the LEDs in the column-row scanning configuration while still having these effects? I hope to save up the number of pins I have to use. Thanks
It should be possible, yes. You'll probably have to scan 8x8 then 8x16, so 16 steps in total for the scan (ie. 8+8).
If you're using the TLC5940 library you'll have to add the code to switch the rows into the interrupt handler which generates the XLAT pulses.
(You'll see what that means when you dig into the library code...)